#include <iostream>

#include <locale.h>



using std::cout;

using std::cin;



int main() {

    setlocale(LC_ALL, "Russian");

    int age;

    cout << "Введите возраст(1-69) = ";

    cin >> age;

    if(age >= 1 && age <= 69) {

        if (age / 10 == 1 || age % 10 == 5 || age % 10 == 6 || age % 10 == 7 || age % 10 == 8 || age % 10 == 9)

            cout << age << "лет";

          else if (age % 10 == 1)

            cout << age << "год";

          else

            cout << age << "года";

    }

    else

        cout << "Неверный возраст";

    return 0;

}